Bake-oven.



I. AHLHEIM.

BAKE OVEN.

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Patented Feb. 91 9.

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P. AHLHBIM.

'BAKE OVEN. v LPPLIOATION FILED K AR. 13., 1907. 91 1 ,799.

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P. AHLHEIM.

` BAKE OVEN.

APPLICATION FILED 11919.13, 1907.

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.BAKE OVEN. APPLIQATION FILED MAR. 13, 1907.

Patented Feb. 9, 1909.

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PLTER AHIIHEIM, OF ST. LOUIS, MISSOURI.

BAKE-OVEN.

Specification o Letters Patent.

Patented Feb. 9, 1909.

Application filed March 13, 1907. Serial No. 862,212.

To all whom 'it may concern:

Be it known that I, PETER AHLHEIM, acitizen of the UnitedStates,residing in the city ofSt. Louis and State of Missouri,l haveinvented a new and useful Portable Bake-Oven,

of which the following is a specication.

This invention relates to improvements in bakers ovens, Vand consists inthe novel arrangement, construction and combination of parts as will befully hereinafter described and claimed. I i' rIhe object of'myinvention is to construct a bakers oven lhaving a baking compartment Vinwhich is located "a tire-box whereby the oven is heated, and after beingsufciently heated, the lire is removed from the fire-box Aand beneaththe baking compartment is locompartment and communication with theyheated compartment for supplylngsuiiicient heat to the heatedcompartment.

rfurther object Vof my invention isfto construct a bakers oven inportable form made of a metallic frame byl which vis vsupported tilingfor forming compartments and retaining the heat in they compartments,and sand and concreteis placed over the tilingto assist in retaining theheat in said compartments.

vIn the drawings: Figure 1 is a front ele-v vation of my improved bakingoven. Fig. 2 is a horizontal sectionalV view taken on the line 2-2 ofFig. 1. Fig. V3 is aD cross sectional view taken on the line 3-3 of Fig.4. Fig. 4 is a vertical central sectional view taken on the line 4-,4 ofFig. 3.V Fig. 5 is a combination plan and horizontal sectional viewtaken on the line 5 5 of Fig. 4. Fig. 6 is a detail perspective view ofone of they angle supports located in the heated compartment. Figs. 7and V8 are enlarged detail sectional views of a portion of the tilingtogether with the angles for supporting the same. Fig. 9 is a detailperspective view of the damper used in the flue.

In the construction of my inventionI providela plurality of channel bars10, which form the base supports for the structure, and

on the same is placed a metallic plate 11. `Upon the two center channelsis mounted a plurality of angle bars 12, and to the same is `securelyfastened a metallic plate 13. This structure extends rearwardly asufficient distanceiand is provided with a rear wall or plate 14. Uponthe two side channel bars 10 I place a plate 15 extending the entiredepth of the oven, and upon the top of the plates 13 and 15 andextending across the entire width and length of the oven is a coverplate 16. Upon the cover plate 16 I place a floor of tiling` 17, whichacts as the bottom Afor the baking compartment 18. Uponeach sideof thefloor 17 I provide a wall of tiling 19, and on the rear side thereof I,place a sheet of asbestos 20, and against the asbestos a layer ofconcrete 21. At the rear of the baking compartment I provide a wall 22composed of tiling and suitably curved so as to deiect the heat toproperly circulate around the entire baking compartment and against therear of the wall 22 I apply concrete 23. Upon the side walls I ment, Itill the joining spaces between the tiles occupied by the arched T barswith fire clay, indicated by the numeral 30, and the spaces in thebottom 17 are likewise filled with fire clay, as indicated by thenumeral 31, so as to make a smooth surface as well Vas to prevent theexcessive heat from contacting with the T bars 32 supy porting thebottom tiles.

In the baking compartment and at one corner thereof I provide a firebox33. This is constructed by providing a wall 34 of `re brick extending`from the bottom plate 11 to the arch 24 of the baking compartment, saidwall extending rearwardly a suihcient depth as shownV in Fig. 2, andbeing provided with an opening 35 leading into the baking compartment.In this rebox is placed the material to be ignited for furnishingsuiiicient heat for the baking compartinent, and after the bakingcompartment has been thoroughly heated, the contents of the irebox isremoved and the floor of the baking compartment thoroughly swept beforethe articles to be baked are placed therein.

The front wall 2S is provided with an oven door 3G, a tire door 3T, alamp door 3S, and a door 39 beneath the fire door 37 which connects withthe ash pit l0, and a door il leading into the heated compartment 4t2.On the top ot' the arch li place a sheet of asbestos i3 and upon the topof the asbestos a layer of concrete l-l. Embedded in the concrete lplace a water pipe d5, the water entering into the pipe through a nipplele passing` through the trent wall, the said pipe extending rearwardlythen eXtending across the oven connecting with a similar pine 47extending near the 'front wall and then passing along the front wall,shown by dotted lines in Fig. 5, its end connected to a nipple 48, thesaid nipple connected to a pipe 49 oi smaller diameter', and said pipeentering into the heated compartment 42 through the trent wall near thebottom, connecting a coil 5() located on the bottom of the heatedvcoinpartment, this coil terminating into the outlet 47a permitting thecontents to empty into any suitable receptacle tor reuse. The object etthis pipe connection is to supply the heated compartment withsui'licient heat by means of hot water or steam, deriving its heat fromthe lire while heating the baking rcompartment. Upon the side walls 13ot the heated compartment ft2 I provide a plurality of angle supports 5lin which are mounted rollers 52, and upon said rollers may beplacedslides o23 upon which the material to oe heated is placed. rlfhe expresspurpose of this heated compartment is to raise the dough after the samehas been molded and formed in shapes before the material is placed intothe baking compartment tor baking. and the use et the slides 53 is tosupport the articles, and the entire contents on one slide can beinserted or removed by the baker at will.

After the oven has been constructed as i described7 material such assand, indicated by the numeral 54, is placed around the concretestructure and the same is held in position b y the sheets l5, the endwalls 2S and 29 and the entire structure is supported in rigid positionby the buck stavcs 55, connected at the tops by the stay rods 5G.

The baking compartment is provided with a tlue 57 to which is connecteda. chimney 5S, and in said chimney is located a damper 5f), a detailconstruction of which .is shown in Fig. 9.

Having fully described my invention, what l claim is:

l. fl. baking oven composed ot a baking conipartmcnt; a fire-box locatedin the bak ing compartment; a heated compartment located beneath thebaking conipartment, said compartments formed by a suitable structuresupporting tiling 'for retaining the heat with the compartments, and asuitable material placed over, under and around the tiling tor retainingthe heat; and a pipe embedded in the material above the bakingcompartment and extending downwardly into the heated compartment ,toradminis tering heat to the heated compartment, subst ntially asspecified.

2. A bakers oven comprising a baking compartment; a lire-box located atone side ot and near the front et said baking compartment; a heatingcompartment located beneath the baking compartment and to one side olfthe lire-box; a plurality ot supports located on the side walls ot theheating compartment; rollers supported in said supports; slidesremovably mounted on said rollers; a pipe located above the baking`com-- partment and embedded in the material; a coil located in thebottom of the heating compartment and a pipe connection between theupper pipes and the coil through which the heated water or steam maypacs for supplying heat to the heating compartment, substantially asspeciied.

PETER AHLHEl'ill'.

llllitnesses donn L. HAVLIN, G. R. MITCHELL.

